Figure 2
From: Towards rainbow portable Cytophone with laser diodes for global disease diagnostics

In vivo two-color Cytophone setup with two laser diodes. (a) Optical scheme. (Adobe Fireworks CS5, www.adobe.com) (b) Photo of two laser diode modules with two wavelengths. (c) Spectra of laser diode emission with central wavelengths of 808 and 915 nm. (d) PA microscope images of mouse ear fragment at 532 nm (top) and 820 nm (bottom). FAC = fast-axis collimation system; ADC = analog-to-digital converter.